Match the following:

Let us analyze each item:

• (P) static char var;: Static variables are allocated memory in the data section (specifically the BSS/initialized data segment) of memory. Thus, P $\rightarrow$ (ii).

• (Q) m = malloc(10); m = NULL;: Memory allocated dynamically using malloc is orphaned when the pointer m is set to NULL without calling free(m). This causes a memory leak, which is lost memory that cannot be freed. Thus, Q $\rightarrow$ (iv).

• **(R) char *ptr[10];: This declares an array of 10 pointers to char, which is a contiguous sequence of memory locations used to store addresses. Thus, R $\rightarrow$ (i)**.

• (S) register int var1;: The register storage class is a hint/request to the compiler to store the variable in a CPU register for faster access. Thus, S $\rightarrow$ (iii).

Matching combination: P $\rightarrow$ (ii), Q $\rightarrow$ (iv), R $\rightarrow$ (i), S $\rightarrow$ (iii), which corresponds to option A.